Pressure equalizer and damper control for oil burners



April 26, 1932. w. L. B.- WILSON PRESSURE EQUALIZER AND DAMPER CONTROL FOR OIL BURNERS Filed Dec. 17, 1928 a 3 4 l 7- "Z 2%. N Z x i 9/ 2% r V 8 u my a 3 8 3i 5 7 g M 5 2 am 3 My 2.25.: MM E z r 47 7 ymwj M 5 u, w 1

Patented Apr. 26, 1932;

" ED S AT S WILLIAM L: i 3. WILSON, on

snlrrnenorso'o, oetmoImIA T a 1 rnnssnnn EQnAmzEnAnnnAMrER con ra-o1. r03 oILlBURnEas;

Application filed neemb'ei' 17; 19a." serial n r szegse.

The present invention relates, to an .improved pressure control means fonregulating the flow of steamand" oilin predetermined volume ratioto anysuitable-type of 5 hydrocarbon burner employing steam and oil to obtain theproper combustion, H I

The principal objectof 'th-is invention is t=improve the pressure control means and to simplify its construction, enabling use in ,or employment ofbut asingle diaphragmex- .Y p d t the. e 1e.- nd e lz lteselee read :directly connected -with the steanrand' oil control valves, whereby the same will be simultaneously operated.

1 511:1 Another obj eot; is to provide a. dlaphragm, the mounting of which" is so constructed as to limit the, mov t of flex f he. d ;.phr agm in 1 either direction, and when at the limit of movement, to maintain exposed to the operating pressure the ,efi'ective area of "l the diaphragm. p :A; further. ob'ect is to provide a control means wherein, the valvesre tm lins th passing of oil and steam through, theq appa- ,iratus are -,of substantially duplicate struc- .'ture,, andwhereinfurnace damper regulating means is formed as l-ani integral part, of.

a the: structure and is actuated, by a variation of; the oil pressure-admitted to the burner.

Other objectsfare in the simplification of the structure, of the casing for ther'control means, enabling the' same tobe manufactured of-two: parts, readily assembled, and which are. designed for? simplicity and; efficiency in 3 the carrying ,out'of the;invention.

umefratioof oil-and steam is preserved by the action 7 of-the regulated steam pressure 3 indirectly automatically and corresponding ly varying oil pressure, .1

'Withthe above mentioned and other ob- Yj'ects in view, the invention consists in the novel construction and combinationof parts hereinafter described, illustrated in the ac-- companyingf drawings and pointed out in the claims heretoappended it being under stood that various changes the form, pro- 1 portion, size and minor details of construction within the scope of the claims maybe resorted to without departing from the spirit By my; invention, the predetermined vol- 7 or sacrificing any of the advantages of the invention. ,]To'more' fully comprehend the invention, reference is directed to, the accompanying drawingsfwherein-f I .7 V I v ":Fi'glf'l'illnstratesione form ot the devicein vertical section, with a damper controlling piston-associalted therewith; 4 Fig; 2 is 'a' similar view of amodified. form ofcon'structionfi I I Fig. 3 is ayiew in planof-the valve Inount "ing plate for therdiaphragm,illustratingthe stop lugs on thfeperipherythereof; 1, L-I ,Referringtothe drawings, wherein-like I'charactens of referencefdesignate correspond- F ingfpai'ts inf-the several views, 1 indicates a casing, consistingof upper and lower sections 2 I and 3, detachably united together along 0 the annular flanges 4,; The upper section is provided with aninlet 5 for oil'under-pressure and'an outlet 6 for oillunder pressure, the same :being separated, a valve seat 7. the valve openings 8 pf which ,Yaredisposed in alignment; aizially within'the casing. jf The passage of oil throughthe openings 8 is'c'o-ntrolled by 'a valve 9, the-surfaces of which are adapted for contacting withthe seat 7. s r Threaded to the upper end of thevalve is v a nut 10: on which bears thelowerfend 'o f a diaphragm controlling sp'ring ll, o jthecoilw yp disp s d! n tud nally o c a b 12, communicating} with the oil in let i 5 h ush 1' e i1'e A "Aii 'p n ten i n "e justing'screw '14 is carried, byfa nut'15', closing c m aa l he ediu'st nen o s i sc variesfthepressure necessary 01 valve 9 to close against the pressure of spring 11.11 'The lower section 3 is'provi'ded with an inlet 16 for steam'under pressure, and an outlet 17' for thesteam, they being: separated by-a valve seat 18 passage through the opening s 19 of which is controlled by valve 20 of a cross sectional structure substantially, the same as valve9l A light coiled spring 21 raises valve 20' to itsseat, a I v Interiorly of the casing l, at the point of meeting of the flanges 4, is'provided a circulur chamber 22, closed by a transversely extending diaphragm 23, the periphery of ,which held between thelflanges i, 'as illus-;-

26, lying on the upper side of the diaphragm.

23, the same being h'eldin locked position by a nut 27.

At its opposite; ends; the portion-24is provided with a key seat 28 for respectively receiving keyhead's'i29 offthe valves" 9- and 20,

p the same being so mounted asto be normally the following manner seated whenthe diaphragm is in its normal position.

v i The peripheries of members 25 and 26 are formed with stoplugs 30 which' limit the ,movement of the'diaphragm in either direction, and at the same time admit ofthe exposure of the entire surface of the diaphragm .to a pressure existing on either side thereof.

Disposed parallel with .the chamber 12, in the upper section 2, is a damper piston mounting cylinder 31, communicating at one end through aport'32 with the upper end of I chamber 12, and at its opposite'end through port 33 with the oil outlet 6, 7

. Reciprocally mounted within the cylinder 31 is a damper operating piston 34 connected in anysuitable manner with the furnace or boiler damper or draftcontrolling means. 1 The stem of the piston 34 extends exterior- 1y of the cylinder 31 through a gland or stufling box 35, and a protecting cap 36 is adapt- Valves .9 and 20 are in' axial alignment, a

single diaphragm controlling the operation thereof, assisted in one direction by the ac- .tion of a spring, the latter being. inaxial' alignment with the I valves.

j Vvithithe parts assembled as in Fig. 1; an

inlet 5 connected to an oil supply under pressure; and outlet 6.to a'burner; an inlet 16 toa source of steam under pressure, preferably to the boiler associated with the burner; an outlet 17 connected-to the burner with which outlet 6 connects, the device operates in VVith spring 11 adjustedto maintain the fora proportionate volume of oil and steam forproper'combustion, the oil pressure above "piston 34 will be reduced and that below will be increased, causingthe piston toproportionatelymove,affording a correct ad ust ment to the damper which it controls.

This operation takesplace inversely when said valves 9 and 20 are seated, due tothe connection of the cylinder 31 through the port 32 with. the-"oil supply under pressure.

Should the steam pressure at 16 rise for any 1 reason, the increase in pressure will act on Q the underside of diaphragm. 23, operating the same to close valves9 and 20, and thus ton 34.

Inthe structure-in Fig. 2, a two part casing 1s provided containing but a single valve for the control: ofthe'oil, andthe lower section 3 of the casing is in the form of a chamber 40 eoiin'ected'withfaisteam inlet 41 and having a normallyclosed drain42.

This type of apparatus is employed where a straight oilis desired to be controlled to the burner.

It will be observedthat on either complete movement of the diaphragm'23upwardly or downwardly, the stop lugs 30 engage the wall of the chamber 22- and'ilimit the diaphragm inits movement, thus saving it'from undue strain, and at the same time the spacing of the stop lugs enables the entire-surface of the diaphragm, when its movement isarrested to be exposed'to operating pressure on either side thereof;

I claim 1. A; i pre ssure equalizer rte-plain fluid streams. under independent pressures, comprising ashe'll c onsistingof afpair offlanged sections arranged in unitary assemblage, a .flexible diaphragm seated in and traversing ed for positioning over the exposed portioir of the screw 14. i

the union between "the sections, one of said .i sections having an inletandan outlet for one ofsaid fluid streams, a valve for controlling the discharge of fluid from the inlet valve. and diaphragm with the valve interposed between the' diaphragm and spring, said otherof said pair ofsections having an inlet for a fluid stream under pressure acting on said 'diaphragm,'stop means at one side of said diaphragm for limiting itsmovement in that 'directionpa chamben within one of said sections and. connected on opposite sides of said valve with said first mentioned fluid stream, and a piston withinsaid chamber and acted on by the fluid pressure of said" fluid dependent on the position of said valve,

2. A pressure equalizer for plural .fluid streams under independent pressures, comprising'a shell; a'si-ngle fiexiblejdiaphragm seated at its periphery in the shell and dividing same into two chambers, each of said chambers h avingan inlet and an outlet opening, said flexible diaphragm' being 'adapted to flex responsive to pressureoffluid streams entering each-of said chambers through said inlet openings, a plate mounted centrallyon I said diaphragm, a valve attached to each face of said mounted plate and adapted to open and close responsive toflexing of the'diaphragm, means to delimit the flexing of the diaphragm in each direction, a spring within each chamber cooperating with the valve therein to move the valve in one direction,

and means to adjust the tension of said springs.

.3. A pressure equalizer for plural fluid streams under independent pressures, comprising a shell, a single flexible diaphragm disposed in the shell and dividing same into two chambers,each of said chambershaving 7 an inlet and an outlet for separate fluid streams, a plate centrally mounted on the diaphram, a valve positively connected to each face'of said plate and adapted to open and close responsive to flexing of the diaphragm, said valves being adapted to move in unison responsive to the flexing of the diaphragm, said centrally mounted plate being adapted to contact with the wall of the shell upon the flexing of the diaphragm and thereby delimit the movement of the valves.

In testimony whereof I have signed my name to this specification.

WILLIAM L. WILSON; 

